i965: Add enums for 3DSTATE_TE field values.

3DSTATE_TE has partitioning, output topology, and domain fields,
each of which has several enumerated values.  We'll also need to
switch on the domain, so enums (rather than #defines) seem like a
natural fit.

I chose to put these in brw_compiler.h because they'll be stored
in struct brw_tes_prog_data, which will live there.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>

diff --git a/src/mesa/drivers/dri/i965/brw_compiler.h b/src/mesa/drivers/dri/i965/brw_compiler.h
index 8f147d3..1ee01eb 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_compiler.h
+++ b/src/mesa/drivers/dri/i965/brw_compiler.h
@@ -490,6 +490,34 @@ enum shader_dispatch_mode {
    DISPATCH_MODE_SIMD8 = 3,
 };
 
+/**
+ * @defgroup Tessellator parameter enumerations.
+ *
+ * These correspond to the hardware values in 3DSTATE_TE, and are provided
+ * as part of the tessellation evaluation shader.
+ *
+ * @{
+ */
+enum brw_tess_partitioning {
+   BRW_TESS_PARTITIONING_INTEGER         = 0,
+   BRW_TESS_PARTITIONING_ODD_FRACTIONAL  = 1,
+   BRW_TESS_PARTITIONING_EVEN_FRACTIONAL = 2,
+};
+
+enum brw_tess_output_topology {
+   BRW_TESS_OUTPUT_TOPOLOGY_POINT   = 0,
+   BRW_TESS_OUTPUT_TOPOLOGY_LINE    = 1,
+   BRW_TESS_OUTPUT_TOPOLOGY_TRI_CW  = 2,
+   BRW_TESS_OUTPUT_TOPOLOGY_TRI_CCW = 3,
+};
+
+enum brw_tess_domain {
+   BRW_TESS_DOMAIN_QUAD    = 0,
+   BRW_TESS_DOMAIN_TRI     = 1,
+   BRW_TESS_DOMAIN_ISOLINE = 2,
+};
+/** @} */
+
 struct brw_vue_prog_data {
    struct brw_stage_prog_data base;
    struct brw_vue_map vue_map;